Home / 409,976.60-565,399.33-257,031.47

Finding the Fourth Proportional to 409,976.60, 565,399.33 and 257,031.47

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Solution

The fourth proportional to 409,976.60, 565,399.33 and 257,031.47 is: 354,472.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,976.60 : 565,399.33 = 257,031.47 : x
  2. Step 2: Convert to fraction form
    409,976.60/565,399.33 = 257,031.47/x
  3. Step 3: Cross multiply
    409,976.60x = 565,399.33 × 257,031.47
  4. Step 4: Simplify right side
    409,976.60x = 145,325,421,697.84
  5. Step 5: Solve for x
    x = 145,325,421,697.84/409,976.60
  6. Step 6: Final answer
    x = 354,472.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.